Consider the following scenario:
- You have a mail-enabled public folder in a Microsoft Exchange Server 2010 environment.
- More than one Mailbox servers host the public folder hierarchies and the public folder content replicas.
- You send email messages to the public folder.
- When the first Mailbox server that hosts the public folder hierarchy is unavailable, the email messages are queued in the delivery queue on the Hub Transport server. However, other Mailbox servers are available.
- When the first Mailbox server that hosts the public folder content replica is unavailable, the email messages are queued in the delivery queue on the Hub Transport server. However, other Mailbox servers are available.